Technology News

Urban rail transit: Model predicts demand with high accuracy during pandemic
2024-07-17 21:50:22
In a recent study published in Engineering, a research team led by Jinlei Zhang from Beijing Jiaotong University, China, introduces a pioneering model that addresses the complex challenge of short-term origin-destination (OD) demand prediction in urban rail transit (URT) systems, particularly under the strain of a pandemic.
Chatbot offers individual support with programming assignments
2024-07-17 21:01:39
How can a chatbot support students in lectures and with assigned exercises? Researchers at the Technical University of Munich (TUM) have developed the chatbot Iris, which offers informatics students personalized assistance with programming assignments.
Study: Large language models are biased, but can still help analyze complex data
2024-07-17 21:01:39
In a pilot study, posted to the arXiv preprint server, researchers have found evidence that large language models (LLMs) have the ability to analyze controversial topics such as the Australian Robodebt scandal in similar ways to humans—and sometimes exhibit similar biases.
Perovskite solar cells: Tackling stability and environmental impacts for a greener future
2024-07-17 19:13:53
Perovskite solar cells have captured much attention due to their high efficiency and low production costs. However, their susceptibility to environmental factors and potential toxic lead release during degradation pose significant hurdles.
New device spearheads cheaper seafloor test for offshore wind farms
2024-07-17 19:13:52
Australian engineers have unveiled a clever new device—based on a modified speargun—as a cheap and efficient way to test seabed soil when designing offshore wind farms.
Unlocking dynamic systems: A new multiscale neural approach
2024-07-17 19:13:52
Dynamical systems describe the evolution of natural phenomena over time and space through mathematical frameworks, often using differential equations. Accurate predictions in these systems are crucial for various applications, yet traditional methods face challenges due to rigidity and complex dynamic behaviors.
Engineers develop technique to pinpoint nanoscale 'hot spots' in electronics to improve their longevity
2024-07-17 18:18:50
When electronic devices like laptops or smartphones overheat, they are fundamentally suffering from a nanoscale heat transfer problem. Pinpointing the source of that problem can be like trying to find a needle in a haystack.
Researchers create insect-inspired autonomous navigation strategy for tiny, lightweight robots
2024-07-17 18:18:50
Have you ever wondered how insects are able to go so far beyond their home and still find their way? The answer to this question is not only relevant to biology but also to making the AI for tiny, autonomous robots.
Emphasizing social benefits could improve trust in autonomous vehicles, researchers find
2024-07-17 18:18:50
A team of Johns Hopkins researchers is reframing the discussion around autonomous vehicles. Though public trust in this technology has faltered due to high-profile testing accidents, researchers hope to rebuild public support for AVs by redirecting attention to their potential to improve social equity and help underserved communities.
Soft, stretchy 'jelly batteries' inspired by electric eels
2024-07-17 18:18:50
Researchers have developed soft, stretchable 'jelly batteries' that could be used for wearable devices or soft robotics, or even implanted in the brain to deliver drugs or treat conditions such as epilepsy.
Astronomy methods applied to reflections in eyes could help with spotting deepfakes
2024-07-17 18:18:50
In an era when the creation of artificial intelligence (AI) images is at the fingertips of the masses, the ability to detect fake pictures—particularly deepfakes of people—is becoming increasingly important.
The magnet trick: New invention makes vibrations disappear
2024-07-17 16:26:02
When everything shakes, precision is usually impossible—everybody who has ever tried to take a photo with shaky hands or make handwritten notes on a bumpy bus journey knows that. With technical precision measurements, even much smaller vibrations are a major problem, for example, with high-performance microscopes or precisely aligned telescope mirrors. Even the smallest vibrations, which are not even perceptible to humans, can render the measurement result unusable.
From floats to fixes: Unifying ambiguity resolution in satellite navigation
2024-07-17 16:26:01
Accurate Global Navigation Satellite System (GNSS) positioning is essential for various applications, but traditional methods like Full Ambiguity Resolution (FAR) and Partial Ambiguity Resolution (PAR) have limitations in precision and speed. These techniques often require extended convergence times and can introduce errors due to noisy observations or biased models.
Creating and verifying stable AI-controlled robotic systems in a rigorous and flexible way
2024-07-17 15:31:37
Neural networks have made a seismic impact on how engineers design controllers for robots, catalyzing more adaptive and efficient machines. Still, these brain-like machine-learning systems are a double-edged sword: Their complexity makes them powerful, but it also makes it difficult to guarantee that a robot powered by a neural network will safely accomplish its task.
Unlocking the potential of rust: High-efficiency green hydrogen production from hematite
2024-07-17 15:19:34
A research team affiliated with UNIST has made a discovery in developing a novel technology that produces high-efficiency hydrogen using hematite (α-Fe2O3), a form of iron oxide (Fe2O3), which has been exposed to oxygen and water.
Scientists bridge the 'valley of death' in carbon capture technologies
2024-07-17 15:19:34
A major obstacle for net zero technologies in combating climate change is bridging the gap between fundamental research and its application in the real world.
Amazon Prime Day 2024 is about to end, but AirTag is still on sale for $23.99
2024-07-17 14:42:09
Prime Day's AirTag deals have seen stockouts, but the single pack is available for $23.99. Or bring the average price per AirTag down with a discount on the 4-pack.
Tech firms slam job quota proposal in India's Silicon Valley
2024-07-17 14:41:11
Indian tech companies on Wednesday slammed a proposal to reserve more than half of all private jobs for local hires in Bengaluru, a city that has powered the country's growth into an IT powerhouse.
Five years into Amazon's Climate Pledge, workers challenge its progress
2024-07-17 14:11:25
Five years after Amazon committed to an ambitious climate goal, the company says it is making progress on reducing emissions—but critics allege those calculations are misleading.
Flexible electronics researchers develop a completely stretchy lithium-ion battery
2024-07-17 12:23:39
When you think of a battery, you probably don't think of stretchy material. But batteries will need this shape-shifting quality to be incorporated into flexible electronics, which are gaining traction for wearable health monitors. Now, researchers in ACS Energy Letters report a lithium-ion battery with entirely stretchable components, including an electrolyte layer that can expand by 5,000%, and it retains its charge storage capacity after nearly 70 charge/discharge cycles.

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